byte

问题 I have a byte[] that I've read from a file, and I want to get an int from two bytes in it. Here's an example: byte[] bytes = new byte[] {(byte)0x00, (byte)0x2F, (byte)0x01, (byte)0x10, (byte)0x6F}; int value = bytes.getInt(2,4); //This method doesn't exist This should make value equal to 0x0110 , or 272 in decimal. But obviously, byte[].getInt() doesn't exist. How can I accomplish this task? The above array is just an example. Actual values are unknown to me. 回答1: You should just opt for the

问题 An object of class having some data and I am gone write that object into java card. I am having a function that convert hexadecimal data into byte array and then write that data to smart card using java card. While i convert data into hex format i encrypt that data. So i need to convert object of class into hexadecimal. Please tell me how to convert object into Hex format in java. I am using smart card type = contact card using java card 2.2.2 with jcop using apdu. 回答1: Here i am sending you

问题 So I am learning how x86 works and have come across people saying that it is byte-addressable, yet can read words, double words, etc. How does the processor decide which method to use and when? E.g. for accessing the next instruction and when a user wants to read/write to memory, which addressing mode is used? 回答1: Every memory access has an operand-size specified by the machine-code instruction. (Addressing mode isn't the right term: different addressing modes are different ways of

问题 byte[] a has value of {119}, which is the ascii equivalent of "w", but when I use .toString() to convert it to string, it gives me a weird string. any idea what I did wrong? byte[] a = characteristicRX.getValue(); String rscvString = a.toString(); Log.d("byteToHex", "rscvString = " + rscvString); while ( rscvString != "w" ){ 回答1: String object takes a parameter of byte[] as an overloaded constructor. Use String rscvString = new String(a); and you should be sorted You can't use boolean

问题 byte[] a has value of {119}, which is the ascii equivalent of "w", but when I use .toString() to convert it to string, it gives me a weird string. any idea what I did wrong? byte[] a = characteristicRX.getValue(); String rscvString = a.toString(); Log.d("byteToHex", "rscvString = " + rscvString); while ( rscvString != "w" ){ 回答1: String object takes a parameter of byte[] as an overloaded constructor. Use String rscvString = new String(a); and you should be sorted You can't use boolean

问题 This question already has answers here : How do you specify a byte literal in Java? (6 answers) Closed 9 months ago . Explain me please, why, when I write 4 overloaded methods and call it => it chooses method with 'int' as default, but not 'byte', which is closer/better, because it can storage values from -127 to 128? class Main { public static void method(short s) { System.out.println("short"); } public static void method(byte b) { System.out.println("byte"); } public static void method(int

问题 I have a text file that contains the word "cool" in it. I read all the bytes in this file and turn it into a string. However, In another function where I am trying to turn the same string back to bytes to write into the file I don't get what I expected. Path path = Paths.get(fileName); byte[] data = Files.readAllBytes(path); String x = new String(); for(byte b: data){ x += Byte.toString(b); } System.out.println(x); Output: "cool" turned into bytes 99111111108 Unfortunately the code below does

问题 I'm looking to reinterpret_cast an array of bytes into a C# struct. I've read several other answers to the problem, most have been about how to implement reinterpret cast. I've settled on a means to reinterpret cast, but I'm getting single characters instead of arrays of characters during my casting. For instance, I have the following object: public unsafe struct Establish503 { public static Establish503 ReinterpretCast(byte[] message) { GCHandle handle = GCHandle.Alloc(message, GCHandleType

问题 Hey I am having hard time solving my homework. Then x86 processor executes commands EIP register(counter) value increases by 1 byte or by a few bytes depending on command's type. Which instructions we have to use so EIP value may go over 100 bytes? Answers are: JMP | ADD | SUB | PUSH | JNZ | MUL | CALL | JZ As I get the idea, EIP is special case register which we can't use. It's called Extended Instruction Pointer. And to increase it's value over 100 bytes, we need to find how much each

问题 I want to remove characters with encodings larger than 3 bytes. Because when I upload my CSV data to Amazon Mechanical Turk system, it asks me to do it. Your CSV file needs to be UTF-8 encoded and cannot contain characters with encodings larger than 3 bytes. For example, some non-English characters are not allowed (learn more). To overcome this problem, I want to make a filter_max3bytes funciton to remove those characters in Python3. x = 'below ð\x9f~\x83,' y = remove_max3byes(x) # y=="below